by David P. Greisman

The March 30 card featuring the rematch between Brandon Rios and Mike Alvarado in the main event sold 4,515 tickets and had another 675 given away for free, according to figures provided by the Nevada State Athletic Commission. A total of 5,537 tickets went unsold.

(The announced attendance on fight night was 5,418.)

The nine-fight card — held at the Mandalay Bay Hotel and Casino in Las Vegas and aired on HBO — pulled in a total gate of $548,050. That is an average of $121.38 per ticket sold.

Alvarado won by a close unanimous decision over Rios, bringing his record to 34-1 with 23 knockouts. Rios, meanwhile, suffered his first pro defeat and is now 31-1-1 with 23 knockouts.

David P. Greisman is a member of the Boxing Writers Association of America. Follow David on Twitter @fightingwords2 or send questions/comments via email at fightingwords1@gmail.com